Cantaloupe is my favourite can't-go-wrong blush. I can't recommend a dupe but have you considered having someone doing a custom purchase for you?
I live a block from a PRO store and would be happy to do a CP for you but I'm in Canada and Canada Post International rates are nowhere as cheap as USA's USPS rates. Cantaloupe blush is only available in Pro-Pan form so a small bubble mailer can be sent as lettermail (which is cheaper).